const path = require('path')

console.log('main 开始')
const a = require('./a.js')
const b = require('./b.js')

console.log(`__filename: ${__filename}`)

console.log(`path.dirname(__filename) : ${path.dirname(__filename)}`)

console.log(`__dirname: ${__dirname}`)

console.log('在 main 中，a.done=%j，b.done=%j', a.done, b.done)
